Converts most of WorkspaceLayoutManager tests to use common code

ash/system/chromeos/power/power_event_observer_unittest.cc

Index: ash/system/chromeos/power/power_event_observer_unittest.cc
diff --git a/ash/system/chromeos/power/power_event_observer_unittest.cc b/ash/system/chromeos/power/power_event_observer_unittest.cc
index 15c9c6a970f4b4dceaac05fe0b21b8ede591f04f..7b82ef02e9624b92f9f6a641564e5bac5a88d122 100644
--- a/ash/system/chromeos/power/power_event_observer_unittest.cc
+++ b/ash/system/chromeos/power/power_event_observer_unittest.cc
@@ -8,6 +8,7 @@
 
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
+#include "ash/test/test_session_state_delegate.h"
 #include "base/time/time.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
@@ -57,7 +58,7 @@ TEST_F(PowerEventObserverTest, LockBeforeSuspend) {
 
   // Check that the observer requests a suspend-readiness callback when it hears
   // that the system is about to suspend.
-  SetCanLockScreen(true);
+  test::TestSessionStateDelegate::SetCanLockScreen(true);
   SetShouldLockScreenBeforeSuspending(true);
   observer_->SuspendImminent();
   EXPECT_EQ(1, client->GetNumPendingSuspendReadinessCallbacks());
@@ -95,7 +96,7 @@ TEST_F(PowerEventObserverTest, SetInvisibleBeforeSuspend) {
 
   // Tests that all the Compositors are marked invisible _after_ the screen lock
   // animations have completed.
-  SetCanLockScreen(true);
+  test::TestSessionStateDelegate::SetCanLockScreen(true);
   SetShouldLockScreenBeforeSuspending(true);
 
   observer_->SuspendImminent();
@@ -114,7 +115,7 @@ TEST_F(PowerEventObserverTest, SetInvisibleBeforeSuspend) {
 TEST_F(PowerEventObserverTest, CanceledSuspend) {
   // Tests that the Compositors are not marked invisible if a suspend is
   // canceled or the system resumes before the lock screen is ready.
-  SetCanLockScreen(true);
+  test::TestSessionStateDelegate::SetCanLockScreen(true);
   SetShouldLockScreenBeforeSuspending(true);
   observer_->SuspendImminent();
   EXPECT_EQ(1, GetNumVisibleCompositors());
@@ -136,7 +137,7 @@ TEST_F(PowerEventObserverTest, DelayResuspendForLockAnimations) {
   //
   // In this case, the observer should block the second suspend request until
   // the animations have completed.
-  SetCanLockScreen(true);
+  test::TestSessionStateDelegate::SetCanLockScreen(true);
   SetShouldLockScreenBeforeSuspending(true);
 
   chromeos::PowerManagerClient* client =